Analysis of the Risk Factors Associated with Endoscopic Sphincterotomy Techniques: Preliminary Results of a Prospective Study, with Emphasis on the Reduced Risk of Acute Pancreatitis with Low-Dose Anticoagulation Treatment - Rabenstein, T.; Schneider, H. T.; Bulling, D.; Nicklas, M.; Katalinic, A.; Hahn, E. G.; Martus, P.; Ell, C. (Endoscopy, 2000)